`format_as` converting struct to `tuple` no longer works

```cpp
#include <fmt/ranges.h>

struct Data {
  int a = 3;
  double b = 0.42;
};

auto format_as(const Data& data)
{ return std::tie(data.a, data.b); }

int main() {
  fmt::println("{}", Data{});
}
```
https://godbolt.org/z/d8a7EsKb4

The above code works on 10.1.1, but not on trunk.